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Indian Navy’s Tri-Commissioning Event

Indian Navy’s Tri-Commissioning Event (January 15, 2025)

Overview

  • Indian Navy inducted three frontline combatants:
    1. INS Nilgiri: Lead ship of the Project 17A class frigates.
    2. INS Surat: Fourth and final ship of the Project 15B class destroyers.
    3. INS Vagsheer: Sixth and final submarine of the Scorpene-class Project 75.
  • Prime Minister Narendra Modi participated in the commissioning ceremony at Naval Dockyard, Mumbai, marking the first-ever tri-commissioning of a destroyer, frigate, and submarine.
  • Over the last decade, 33 ships and 7 submarines were added to the Navy, with 39 out of 40 vessels built in Indian shipyards.

Key Features of the Ceremony

  • The vessels were constructed entirely at Mazagon Dock Shipbuilders Limited (MDL), Mumbai.
  • Extensive trials included:
    • Machinery and hull tests.
    • Fire-fighting and damage control assessments.
    • Verification of navigation and communication systems.
  • Delivery Timeline:
    • INS Nilgiri and INS Surat: Delivered on December 20, 2024.
    • INS Vagsheer: Delivered on January 9, 2025.

INS Nilgiri: Project 17A Frigate

  • A major upgrade over the Shivalik-class frigates with:
    • Improved stealth features: Sloped superstructure, flush deck, infrared suppression system, and acoustic quietening.
    • Modular integrated construction methodology.
  • Specifications:
    • Length: 149 meters; Displacement: 6,700 tons.
    • Propulsion: CODAG system with GE LM2500 gas turbines.
  • Weapons and Sensors:
    • 76mm SRGM (OTO Melara Strales) with DART ammunition.
    • BrahMos cruise missiles, Barak-8 surface-to-air missiles, and L&T torpedo launchers.
    • Primary radar: MF-STAR by IAI, made by BEL.
  • Future Orders:
    • Project 17A: Comprises 7 ships (split 4:3 between MDL and GRSE).
    • Project 17B: Planned for 8 ships at an estimated cost of $7.5 billion.

INS Surat: Project 15B Destroyer

  • Final ship of the Visakhapatnam-class destroyers, with:
    • Indigenous content of 75%.
    • Advanced network-centric capabilities.
  • Specifications:
    • Length: 163 meters; Width: 17 meters; Displacement: 7,400 tons.
    • Speed: Maximum of 30 knots.
  • Weapons and Sensors:
    • BrahMos cruise missiles, Barak-8 missiles, and AK-630M CIWS.
    • Radar: MF-STAR.
  • Future Developments:
    • No destroyers under construction.
    • Planning for Next Generation Destroyers (Project 18).

INS Vagsheer: Scorpene-Class Submarine

  • Part of Project 75 and among the most silent diesel-electric submarines globally.
  • Roles:
    • Anti-surface and anti-submarine warfare.
    • Intelligence gathering and special operations.
  • Weapons and Features:
    • Wire-guided torpedoes, Exocet anti-ship missiles, and advanced sonar systems.
    • Modular construction allows for future upgrades, including Air Independent Propulsion (AIP).
  • Future Projects:
    • Plans for Project 75I and Project 76.
    • Contract signed to equip lead submarine INS Kalvari with an AIP plug by DRDO and L&T.

Additional Facts and Definitions

  • CODAG (Combined Diesel and Gas): A propulsion system combining diesel engines for cruising and gas turbines for higher speeds.
  • Scorpene-Class Submarines: Known for their stealth and versatility; part of India’s effort to modernize its submarine fleet.
  • MF-STAR Radar: A multifunction surveillance and threat alert radar developed by IAI, offering superior detection and tracking.
  • BrahMos Missile: A supersonic cruise missile developed jointly by India and Russia, capable of precision strikes.
  • AIP Technology: Enhances the endurance of conventional submarines by allowing them to remain submerged for longer periods without surfacing to recharge batteries.
  • Barak-8 Missiles: Surface-to-air missiles designed to counter a variety of airborne threats.

This comprehensive induction marks a significant step in bolstering the Indian Navy’s combat readiness and indigenous defense capabilities.

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Indigenous Naval Ship Inducted in India

Indigenous Naval Ship Inducted in India

The number of attempts remaining is 2

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1. Which destroyer class does INS Surat belong to?

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2. What distinguishes INS Vagsheer as a Scorpene-class submarine?

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3. What advanced feature on INS Nilgiri enables smooth helicopter operations?

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4. Which helicopters can operate on INS Nilgiri and INS Surat?

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5. Which ship was commissioned into the Indian Navy at Yantar Shipyard, Russia, in December 2024?

6 / 20

6. What does the acronym SSK stand for?

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7. What is the role of INS Vagsheer?

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8. Which missile system is common to both INS Nilgiri and INS Surat?

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9. What is the caliber of the primary gun fitted on INS Nilgiri?

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10. What is the expected cost of Project 17B?

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11. What is the role of AIP technology in submarines?

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12. Which advanced feature ensures stealth in INS Nilgiri?

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13. What is the displacement of INS Nilgiri?

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14. What is the name of the shipyard where INS Nilgiri, INS Surat, and INS Vagsheer were constructed?

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15. Which missile is jointly developed by India and Russia?

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16. What is the maximum speed of INS Surat?

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17. What percentage of indigenous content is in INS Surat?

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18. Which of the following submarines belongs to the Scorpene-class under Project 75?

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19. Which propulsion system is used in INS Nilgiri?

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20. What is the primary radar equipped on INS Nilgiri?

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